Lock



' J. EVANS.

LOCK.

APPLICATION FILED NOV.10, 1919. 1,876, 1&1 v Patented Apr. 26, 1921.

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'uvmrai? 3a I 37 &\ w 35 )977'0R/7EY5 UNITED STA-Th3 JOSEPH EVAN'S, OFBUFFALO, NEW YORK.

LOCK;

Specification of Letters Patent. Patented Apr, 26,1921.

Application filed November 10, 1919. Serial No. 336,900.

To aZZ whom it may concern:

Be it known that I, Josnrrr EVANS, a citizen of Canada, residing atBuffalo, in the county of Erie and State of New York, have invented newand useful Improvements in Locks, of which the following is aspecification. 4

This invention relates to a lock which is more particularly designed foruse on sliding doors, but which can also be used for other purposes, ifdesired.

It is the object of this invention to provide a lock for use on slidinggarage doors and for similar purposes which can be readily adapted foruse on either right or left-hand doors and also easily adjusted for thepurpose of taking up wear and adapting the lock to the relativepositionof the 7 door and the frame with which it coopen ates; which is soorganized that the lock cannot be openedfrom the outside by lifting thedoor, which is provided with improved means for holding the hook orlatch of the door yieldinglyin its operative position, which is somounted on the door that the same cannot be tampered with-from theexterior of the building, and which is provided with an improved keymechanism for operating the hook or latch.

In the accompanying drawings: Figure 1 is a fragmentary horizontalsection of a door and frame equipped with my improved lock. Fig. 2 is aperspective view of the means for guiding the hook or latch and holdingthe same yieldingly in its operatlve position. fFig. 3 is a perspectiveview of the hub which carries the hook and the retaining pin or keywhereby this hub is Fig. 6 is a vertical longitudinal section taken online 66, Fig. 1. Fig 7 is a perspective View showing the plurality of'locking disks and spacing rings forming part of the locking mechanism.

Similar characters of reference indicate corresponding parts throughoutthe several views. Y

10 represents one of the upright members of the door frame and 11 one ofthe upright edge portions of; the door which is adapted" to slidehorizontally toward and from a ver- Fig. 5 is a perspective view of thetical groove 12 in'the edge of the door which isjournaled horizontallyandtrans- .versely in a bearing opening 14: formed in the door andprovided at its inner end with a handle 15 forturning the same. Thishandle preferably has the form of a split ring, the opposite ends 16 ofwhich are turned inwardly and engage with opposite ends of a transverseopening 17 in the hub which formsa pivotal connection between thishandle and the hub, so that this handle can be swung outward for usewhen it is desired to turn the hub andthe same can also be swung inwardso as to lie close to the side of: the door when-the handle is not inuse. a bearing 18 formed inthe "rear end of a sleeve 19 which isarranged in an opening in the'front or outer partof the door. Thissleeve is provided at its front end with a face plate 20 which latter isrigidly secured to the. door so as to be incapable of easy removal bymeans of bolts 21 passing through the door and engagingtheir heads 22with the face plate 20, while the rear ends of the bolts pass through aninner or rear face plate 23 arranged on the rear'side ofthe door, theseparts, being, rigidly secured together by means of screw nuts 24 appliedto these bolts and bearing against the rear side of the plate. 23 andupsetting or rivetscrew nuts, as shown at 25 in Fig. 12

Means are providedffor permitting the' hub to rotate toa limited extentwith reference to thesleeve 19 but preventing longitudinal separationtherefrom,-- this being preferably; effected by means ofia pin 26securedtransversely in the side of the sleeve 19 and engaging with asegmental groove 27 arranged circumferentially on the hub, as shown inFigs. 1, 3 and 4. I

26 represents the shank of a-latch or hook which is arranged ina recess29 extending from the hub 13 to the vertical edge of the door, and whichhasits bill or beak 30' e tending beyond thevertical edge of the door,while its inner or rear end 31 is provided with an external screw threadwhich engages with an internally-threaded opening Atits frOnt end thehub turnsiin' 32'arranged diametrically in the hub' be tween the endsthereof. The outer portion of this hook passes through vertical slots 33and 34 formed respectively in the guide plate 35 which is secured to thevertical edge of the door by means of screws 36 and a catch plate 37which is secured to the vertical edge of the frame at the bottom of therecess 12 therein by means of screws 38, said frame being p'rovidedwitha recess 39 in 'rear'of the catch plate 37 so as to perini-t the bill ofthe hook to engage with the inner or rear side of the catch plate-37below the lowerend of its slot 34 for connecting the door with theframe. By turning the hook on the hub the screw connec tion betweenthese parts permits of adjusting the distance between the hub and thebill 30, so that the bill engages properly with the catch plate andthereby permits of taking up wear and also facilitates mounting thelock. By means of the screw connection between the hook and the hub itis also possible to reverse the lock with reference to the hub andpermit the lock to be used either as a right-hand lock or alefth'and'lock without requiring any alteration in the construction, andthus avolding the I necessity of making two forms of locks to meet thisrequirement. The outer face of 'the bill or beak of the hook is beveled,as

shown at 40, so that when the door is slid into its closed position, thebill-of the hook will'engafge the catch plate adjacent to the lower endof its slot 34 and lift the hook, so as to permit itsbill to passautomatically behind the catch plate in a manner common to this typeof'lock'.

The means for yieldingly holding the hook in its depressed operativeposition which embody my improvements, are constructed as follows:

' 41 represents a vertically-movable" follower which is guided on therear or inner side of the guide plate 35 and is provided at its lowerend with a notch or recess 42 which receives the upper edge of the shankof the hook. Projectingupwardly from the follower is a guide rod 43which slides at its upper end in a tubular guide 44 arranged on the rearside of the guide plate35, as shown in Fig. 6; Surrounding the guide rod43 is a spring45'which bears at its'lower. "end against the follower andat its upper end against the guide tube 43, and which operatestoyieldingly hold the hook in its lowered or operative position. The fol-I lower is guidedin its downward movement r and also limlted 111" itsmovement in this direction by means ofa ushaped guide, the horizontallegs 46 and 47 of which are secured'to the rear side of the guide plate35 while the vertical cross bar 48 thereof ex- 1 tends over. thefollower and is received by a notch 49 on the inner side of the latter,as

shown in Fig. 2. As the follower rises and falls, the same is heldagainst lateral displacement by means of the cross bar 48, and byengaging with the lower leg 47 of the U-shaped guide, the downwardmovement of the same is limited and disengagement of the guide rod 43from the tubular guide 44 is by this means prevented.

' In order to prevent the bill or nose of the hook from being disengagedfrom the catch plate 37 by lifting or jacking up the door,

means are provided for interlocking the 7 guide plate 35 and the catchplate 37 so as to prevent the doorfrom being lifted. This is preferablyeffected by means of a retain- 111 lu 50 arran ed on the outer side ofthe b c guide plate 35 and pro ect1ng intothe upper part of the slot 34of the catch plate 37 when the'door is closed, so that ifan attempt iswhich key mechanism embodies my improvements and is constructedasfollows:

52 and 53 represent a plurality of-lock-ii'ig disks and 'spacingrings,respectively,- which are arranged in a longitudinal row within the frontpart of the sleeve'1'9 and alternate with each other. These rings anddisks are held against turning within the sleeve 19,

this being accomplished for instance by means of a lug54 proj ectinglaterally from each ring and disk into a longitudinal groove 55 in theadjacent part of the sleeve 19, as shown in Fig 1; Each of the disksisprovided-with an elongated opening 56,

the openings of the several disks being in line with the openings in thespacing rings .53 and also in line with notches 57 formed in the frontend of the hub 13 and in line with an opening 58 formed in the faceplate of the sleeve '19,- as best shownin Fig. 1.

The key is adapted to pass with its shank 59 through the correspondingopening 58 of the face plate, the several locking disks 52 and spacingrings 53, and engage a pair of prongs 60 at its inner or rear endwiththe notches '57 in the front end of the hub for turning the lattertogether with the hook' and releasing the bill 30 from the catch plate37, this turning movement of the key being effected by means of ahandle61 arranged at the outer endthereof. The shank or body of the key isprovided at its opposite longitudinal edges with notches 62 which areadapted to register with the corresponding portions of the faceplate 20and the several lockingv disks52, and thereby permit the key to beturned for operating the hub and the hook connected therewith. Ittherefore becomes necessary to employ a key having its notches 62properly located in order to permit of operating this look. By varyingthe thickness of the locking disk 52 and the spacing rings or washers 53and employing a key having its notches 62 constructed accordingly,various permutations or combinations may be formed which will permit ofmaking each look different from others, and thereby insure greatersecurity against tampering.

I claim is my invention:

1. A lock comprising a catch, and two plates adapted to be secured to adoor and frame respectively and provided with slots adapted to receivesaid hook, one of said plates being provided with a retaining lug, andthe other plate being provided with a shoulder adapted to be engaged bysaid lug.

2. A look comprising a rocking hook, a plate provided with a slot whichreceives said hook, and means for yieldingly holding said hook in adepressed position comprising a follower provided with a notch which receives said hook, a guide rod connected with said follower, a guide tubeon said plate which receives said rod, and a spring surrounding said rodand engaging its opposite ends with said tube and follower.

3. A look comprising a rocking hook, a plate provided with a slot whichreceives said hook, and means for yieldingly holding said hook in adepressed position comprising a follower engagmg said hook, a guide rodconnected with said follower, a guide tube which receives said rod, aspring interposed between said tube and follower, and a U- shaped guidemounted on said plate and extending over said follower.

4:. A look comprising a rocking hook, a plate provided with a slot whichreceives said hook, and means for yieldingly holding said hook in adepressed position comprising a follower engaging said hook, a guide rodconnected with said follower, a guide tube which receives said rod, aspring interposed between said tube and follower, and a Ushaped guidehaving its legs secured to said plate, and said follower being providedwith a notch which receives the cross bar of said U-shaped guide.

JOSEPH EVANS.

